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Question
State whether the following statements regarding air pollution are true (T) or false (F)?
I. Air can be polluted only by human activities
II. Air pollutants do not affect the growth and yield of crops
III. Air pollutants have detrimental effects on the respiratory system of humans
State whether the following statements regarding air pollution are true (T) or false (F)?
I. Air can be polluted only by human activities
II. Air pollutants do not affect the growth and yield of crops
III. Air pollutants have detrimental effects on the respiratory system of humans
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Solution
The correct option is D I -F, II - F, III - T
Air pollutants are agents which cause undesirable changes in the physical, chemical or biological characteristics of air.
These substances cause harm to all living organisms and are added to the atmosphere either from natural sources such as volcanic eruptions, pollens released from flowers, etc., or by human activities such as automobile exhausts, burning of fossil fuels such as coal in thermal power plants, etc.
Thus, statement I is false.
Air pollutants have extreme adverse effects on both plants and animals. The extent of damage caused depends on the concentration of pollutants, duration of exposure to the pollutants and the tolerance level of an individual.
Exposure to pollutants can inhibit growth or cause premature death in plants which can lead to reduced crop yield.
Thus, statement II is false.
Air pollution can have detrimental effects on the human respiratory system.
Short term effects can result in respiratory diseases such as bronchitis (inflammation of the lining of bronchial tubes), pneumonia (inflammation of air sacs which cause them to be filled with fluid or pus), etc.
Long-term effects can result in lung cancers, emphysema (destruction of lung tissue, especially alveoli), etc.
Thus, statement III is true.
Air pollutants are agents which cause undesirable changes in the physical, chemical or biological characteristics of air.
These substances cause harm to all living organisms and are added to the atmosphere either from natural sources such as volcanic eruptions, pollens released from flowers, etc., or by human activities such as automobile exhausts, burning of fossil fuels such as coal in thermal power plants, etc.
Thus, statement I is false.
Air pollutants have extreme adverse effects on both plants and animals. The extent of damage caused depends on the concentration of pollutants, duration of exposure to the pollutants and the tolerance level of an individual.
Exposure to pollutants can inhibit growth or cause premature death in plants which can lead to reduced crop yield.
Thus, statement II is false.
Air pollution can have detrimental effects on the human respiratory system.
Short term effects can result in respiratory diseases such as bronchitis (inflammation of the lining of bronchial tubes), pneumonia (inflammation of air sacs which cause them to be filled with fluid or pus), etc.
Long-term effects can result in lung cancers, emphysema (destruction of lung tissue, especially alveoli), etc.
Thus, statement III is true.
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